3d100d0fa9
The i82801b11 bridge didn't have a vmsd and thus didn't send any migration data, including that of its parent PCIBridge object. The symptom being if the guest used any devices behind the bridge the guest crashed (mostly with various interrupt related issues). Note: This will cause migration from old qemus that used this device to explicitly fail during migration as opposed to the guest crashing. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Suggested-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/*
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* QEMU i82801b11 dmi-to-pci Bridge Emulation
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*
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* Copyright (c) 2009, 2010, 2011
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* Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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* Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>
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*/
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#include "qemu/osdep.h"
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#include "hw/pci/pci.h"
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#include "hw/i386/ich9.h"
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/*****************************************************************************/
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/* ICH9 DMI-to-PCI bridge */
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#define I82801ba_SSVID_OFFSET 0x50
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#define I82801ba_SSVID_SVID 0
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#define I82801ba_SSVID_SSID 0
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typedef struct I82801b11Bridge {
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/*< private >*/
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PCIBridge parent_obj;
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/*< public >*/
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} I82801b11Bridge;
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static int i82801b11_bridge_initfn(PCIDevice *d)
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{
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int rc;
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pci_bridge_initfn(d, TYPE_PCI_BUS);
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rc = pci_bridge_ssvid_init(d, I82801ba_SSVID_OFFSET,
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I82801ba_SSVID_SVID, I82801ba_SSVID_SSID);
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if (rc < 0) {
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goto err_bridge;
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}
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pci_config_set_prog_interface(d->config, PCI_CLASS_BRIDGE_PCI_INF_SUB);
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return 0;
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err_bridge:
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pci_bridge_exitfn(d);
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return rc;
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}
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static const VMStateDescription i82801b11_bridge_dev_vmstate = {
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.name = "i82801b11_bridge",
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.fields = (VMStateField[]) {
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VMSTATE_PCI_DEVICE(parent_obj, PCIBridge),
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VMSTATE_END_OF_LIST()
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}
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};
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static void i82801b11_bridge_class_init(ObjectClass *klass, void *data)
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{
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PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
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DeviceClass *dc = DEVICE_CLASS(klass);
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k->is_bridge = 1;
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k->vendor_id = PCI_VENDOR_ID_INTEL;
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k->device_id = PCI_DEVICE_ID_INTEL_82801BA_11;
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k->revision = ICH9_D2P_A2_REVISION;
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k->init = i82801b11_bridge_initfn;
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k->config_write = pci_bridge_write_config;
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dc->vmsd = &i82801b11_bridge_dev_vmstate;
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set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
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}
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static const TypeInfo i82801b11_bridge_info = {
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.name = "i82801b11-bridge",
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.parent = TYPE_PCI_BRIDGE,
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.instance_size = sizeof(I82801b11Bridge),
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.class_init = i82801b11_bridge_class_init,
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};
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static void d2pbr_register(void)
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{
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type_register_static(&i82801b11_bridge_info);
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}
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type_init(d2pbr_register);
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